You can't search actually for:

•Articles text length, e.g. find me articles between 300 and 400 words in body;

•Number of elements of articles,

•Articles that have / don't contain specific elements , e.g. articles with or without images, articles with videos etc;

The following items can be easily added to the search forms:

•Article id, creation date, creator, modifier, keywords, categories, deadline, locklevel, priority, event date, instructions, credit, org source, location, city, state, country, country code, position, publication date, publication, notes;